Question

Step 1

a= initial sound= 90 decibels

It decreases 9.8% per second. 9.8%=0.098

Sp after 1 second sound is (1-0.098)=0.902 times of the previous bell.

b= 0.902

Answer(a): a=90 and b=0.902

Step 2

when it strucks till 8 seconds then 0 <= t <=8.

An...

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